METHOD OF DEVELOPMENT OF MASSIVE OIL FIELD WITH LAMINAR IRREGULARITIES Russian patent published in 2012 - IPC E21B43/16 

FIELD: gas and oil production.

SUBSTANCE: method involves development of vertical production and injection wells constructed along well grid, construction of additional low-angle wellbores, agent injection into production wells and product obtainment from production wells. Low-angle wellbores are drilled by 144 mm diameter drill from additional injection and production wells drilled from the surface with grid compression to 1-4 hectares per well. Low-angle wellbores are drilled across bed fracture property to the length of 2-3 bed thickness, with further wellbore casing and secondary exposure of production bed. Further, water insulation works are performed in flooded bed interlayers from low-angle wellbores and acid processing is performed in oil production wellbores before commissioning of additional wells.

EFFECT: reduced cost of well drilling, extended production coverage of beds, reduced production of accompanying water, higher well rates, optimum bed pressure maintenance.

2 dwg